The attribution here is correct (Matthias Braun, Areva); the name and logos were stripped when it was released, apparently for some kind of legal reason. This is discussed at the end of this article:
It appears the Stanford presentation was given by an Areva executive, and the branding / sources on this copy were removed:
"On March 21, Stanford University presented an invitation-only panel discussion on the Japanese crisis that featured Alan Hanson, an executive vice president of Areva NC, a unit of the company focused on the nuclear fuel cycle."
https://hackernews.hn/item?id=2411141
it looks like the attribution is different for each presentation, though the content is identical